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authorroel kluin <roel.kluin@gmail.com>2009-09-09 05:02:24 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-09-24 15:31:38 +1000
commit0f3372741f2de8dc85a60be737b519a47b395b85 (patch)
treede1232bba74a72ceeece8967a257e4608eca5ce5
parent254be490f257fc3f76ca5f869ac8d107b3827025 (diff)
powerpc: kmalloc failure ignored in vio_build_iommu_table()
Prevent NULL dereference if kmalloc() fails. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-rw-r--r--arch/powerpc/kernel/vio.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index bc7b41edbdf..1b4f674ad7c 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -1054,6 +1054,8 @@ static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev)
return NULL;
tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
+ if (tbl == NULL)
+ return NULL;
of_parse_dma_window(dev->dev.archdata.of_node, dma_window,
&tbl->it_index, &offset, &size);